New theory explains how Earth’s inner core remains solid despite extreme heat
31–38 of 38 posts
Re: New theory explains how Earth’s inner core remains solid despite extreme heat
#32Earlier quoted context omitted.
Interesting, thanks. I still am not sure what the technical meaning of "isolated" is here. But wouldn't such an object continue heating up "infinitely" (maybe stopping at some phase-transition temperature) without constant input of energy?
> I still am not sure what the technical meaning of "isolated" is here. Technically, it means an object of finite spatial extent surrounded by vacuum, and nothing else in the entire universe. Obviously that's an idealization. :-) But it makes the mathematical model tractable. > wouldn't such an object continue heating up "infinitely" Not necessarily; it might reach a stable state where it can't radiate any more energ…
> Technically, it means an object of finite spatial extent surrounded by vacuum, and nothing else in the entire universe. Obviously that's an idealization.
Reminds me of Fritz Zwicky's "spherical bastards". Although unrelated, my physics prof that taught thermo introduced spherical bastards as an aside after stating we'd basically assume all bodies are spherical when calculating thermo transfers. This prof was where I learned that Zwicky often referred to some colleagues as "spherical bastards", and when when questioned why, he responded: "because no which way you look at them, they're a bastard." I'm sad I can't remember the prof's name; he was quite a character, a short, squat old man. Just add a beard and appropriate clothing, he'd have played a good Santa Clause. He had a minor role in the Manhattan Project, and would often share stories. Lectures were always fun. One of the few classes I never skipped.
Re: New theory explains how Earth’s inner core remains solid despite extreme heat
#33Funniest ad placement seen in a while: "Spinning within Earth’s molten core is a crystal ball" ... with the Canadian Foreverspin.com ad just above this. I want one, and please, keep on spinning.
If you ever want to f' with TSA in a completely legal way: carry lead crystal in your carry-on luggage. I've done it a number of times carrying Christmas gifts to/from family. My favorite was when my parents gifted me a set of lead crystal tumblers from Waterford. The cut on the crystal sorta makes them look like a pineapple grenade. Thing is, they're opaque on TSA scanners, so they make you pull them out (and they're really cautious at this point), then they pull the items out, and they're completely transparent. Their minds: blown. If you're lucky, you get one you can explain it to, if you're unlucky, you get a doofus that has to call for backup.
Re: New theory explains how Earth’s inner core remains solid despite extreme heat
#34> The ultimate goal of Earth Sciences is to understand the past, present and future... That is the ultimate goal of all science.
You are right, science is not bound to Earth and also even "the past, present and future" seem too narrow to me. Science is about understanding anything which we are curious about, and that may include alternative timelines which do not lay neither in the "the past, present nor the future" and also the time itself.
Without a way to access those alternate timelines, no science can be done there, because no hypothesis will be falsifiable.
Re: New theory explains how Earth’s inner core remains solid despite extreme heat
#35Blogspam of: https://www.kth.se/en/forskning/artiklar/new-theory-explains...
Ok, we changed to that from http://sciencebulletin.org/archives/10367.html.
I'm pretty sure most of these are press releases intended to be republished, which isn't exactly the same as blogspam (where one site rips off another). Still, original URLs are preferable.
Re: New theory explains how Earth’s inner core remains solid despite extreme heat
#36Blogspam of: https://www.kth.se/en/forskning/artiklar/new-theory-explains...
Ok, we changed to that from http://sciencebulletin.org/archives/10367.html . I'm pretty sure most of these are press releases intended to be republished, which isn't exactly the same as blogspam (where one site rips off another). Still, original URLs are preferable.
I never comment against actual press releases, because, hey, that's what they're meant for.
"Blogspam" is appropriate for literally ripped content without specific attribution; to then proceed to edit out a byline or other author credit is simple plagiarism.
Press Releases always have either an embargo date/time or "For Immediate Release" and a press contact for the originator, in my experience.
Re: New theory explains how Earth’s inner core remains solid despite extreme heat
#37Funniest ad placement seen in a while: "Spinning within Earth’s molten core is a crystal ball" ... with the Canadian Foreverspin.com ad just above this. I want one, and please, keep on spinning.
If you ever want to f' with TSA in a completely legal way: carry lead crystal in your carry-on luggage. I've done it a number of times carrying Christmas gifts to/from family. My favorite was when my parents gifted me a set of lead crystal tumblers from Waterford. The cut on the crystal sorta makes them look like a pineapple grenade. Thing is, they're opaque on TSA scanners, so they make you pull them out (and they'r…
Haha. :) Thing is, I'd probably have to show my HN credentials and whatever an^T^T digital probing they do to let you in, so they'd know it was all premeditated and then I'd be in real trouble. (I'm in Straya).
Re: New theory explains how Earth’s inner core remains solid despite extreme heat
#38Earlier quoted context omitted.
Ok, we changed to that from http://sciencebulletin.org/archives/10367.html . I'm pretty sure most of these are press releases intended to be republished, which isn't exactly the same as blogspam (where one site rips off another). Still, original URLs are preferable.
I never comment against actual press releases, because, hey, that's what they're meant for. "Blogspam" is appropriate for literally ripped content without specific attribution; to then proceed to edit out a byline or other author credit is simple plagiarism. Press Releases always have either an embargo date/time or "For Immediate Release" and a press contact for the originator, in my experience.
I'm not sure that's right. We see countless articles, usually originating on university websites, that are PR pieces about research studies. These get reprinted across a wide range of science-content farm sites, which tend to be pretty low quality, but I'm not sure they're copying without permission. It seems more that the system is designed to work this way.